The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
Sep. 14, 2018
Kabushiki Kaisha Yaskawa Denki, Kitakyushu, JP;
Takeo Suzuki, Kitakyushu, JP;
Motomichi Ohto, Kitakyushu, JP;
Kenichi Hirata, Kitakyushu, JP;
Hiroki Takamura, Kitakyushu, JP;
Yosuke Shirozu, Kitakyushu, JP;
Yuta Matsunami, Kitakyushu, JP;
KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu, JP;
Abstract
A rotating electrical machine includes a plurality of core pieces forming a stator core. Each of the core pieces includes contact surfaces on one side end and another side end in a peripheral direction, a tapered protrusion on the contact surface of the one side end, the protrusion including first inclined surfaces outside and inside, and a recess on the contact surface of the other side end, the recess including second inclined surfaces contacting the first inclined surfaces outside and inside to receive the protrusion of adjacent core piece. A cross-sectional shape of the protrusion is a shape such that, inside a circle centered on a first end portion with a distance being a radius between a second end portion located on an opposite side of the first end portion and the first end portion, at least a part of the first inclined surfaces contact the second inclined surfaces.